图纳综合征与同染色体结构异常:一个病例报告
Tahmina Ferdousi1, Hurjahan Banu1, Nusrat Sultana1
1Department of Endocrinology, Bangabandhu Sheikh Mujib Medical University, Dhaka, BGD.
Cureus
|July 18, 2023
概括
特纳综合征 (TS) 是矮身的一个常见原因. 这项研究突出了罕见的变异,包括异染色体Xq和马赛克形式,这些变异可能没有经典症状,需要染色体分析才能在受影响的女性中确切诊断.
科学领域:
- 遗传学 是一个遗传学.
- 内分泌学 在内分泌学.
- 生殖医学 生殖医学
背景情况:
- 特纳综合征 (TS) 是一种影响女性的染色体状况,通常以矮身和延迟青春期为特征.
- 虽然经典的45,XO型占病例的一半,但马赛克形状和结构性X染色体异常也很普遍.
- 同染色体Xq是最常见的结构异常,变体可以呈现非典型的症状,如二次异常.
研究的目的:
- 描述特纳综合征的两种罕见变体:结构异常 (46X,iso(Xq)) 和马赛克形式 (45,XO/46X,iso(Xq)).
- 要强调的是,这些变体可以呈现出矮身和二次 amenorrhea,模仿其他条件.
- 倡导对身材矮小的女性进行染色体分析和二次 amenorrhea,以确定罕见的TS变体.
主要方法:
- 病例报告详细介绍了两名患有罕见特纳综合征变异的患者.
- 型和染色体分析以确定特定的遗传异常.
- 临床评估侧重于身体特征和生殖史.
主要成果:
- 两位患者都出现了矮身和二次缺血,缺乏经典的TS表现.
- 一名患者的型为46X,iso(Xq),而另一名患者的型为45,XO/46X,iso(Xq).
- 同染色体变异发生在15-18%的TS病例中,往往导致延迟或错过诊断.
结论:
- 罕见的特纳综合征结构和马赛克变体可以异常呈现,主要是身材矮小和二次缺血.
- 这些变体中没有经典的TS特征,这可能会推迟诊断.
- 染色体分析对于诊断身材矮小的女性和二次缺血病至关重要,以检测这些罕见的TS变体.
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